Railroad Archives Online
- CollectionD0027 - Timothy Miller Collection
- Series003 - Great Northern Railway Company (U.S.)
- Subseries Level 1009 - Engineering Records
- Subseries Level 2008 - Physical plant drawing
- Subseries Level 3001 - Bridges
- 2433 more...
- ItemBB024985 - Great Northern Engineering Drawing: Proposed Rip Rap Bridge - 12, Bridge 12 - Swinomish Slough, West of Whitmarsh, Washington, undated
- ItemBB024987 - Great Northern Engineering Drawing: Channel Soundings, Bridge 12 - Swinomish Slough, West of Whitmarsh, Washington, undated
- ItemBB024988 - Great Northern Engineering Drawing: Channel Soundings, Bridge 12 - Swinomish Slough, West of Whitmarsh, Washington, undated
- ItemBB024989 - Great Northern Engineering Drawing: Channel Soundings, Bridge 12 - Swinomish Slough, West of Whitmarsh, Washington, undated
- ItemBB024990 - Great Northern Engineering Drawing: Channel Soundings, Bridge 12 - Swinomish Slough, West of Whitmarsh, Washington, undated
- ItemBB024991 - Great Northern Engineering Drawing: Soundings Pier 1, Bridge 12 - Swinomish Slough, West of Whitmarsh, Washington, undated
- ItemBB024992 - Great Northern Engineering Drawing: Soundings Pier 2, Bridge 12 - Swinomish Slough, West of Whitmarsh, Washington, undated
- ItemBB024996 - Great Northern Engineering Drawing: General Plan, Bridge 19, North of Silvana, Washington, 1951
- ItemBB024998 - Great Northern Engineering Drawing: General Plan, Bridge 7.2 - Overhead Highway, West of Whitmarsh, Washington, 1951
- 1559 more...